mandible /'maendibl; 'maendabl/ n 1 jaw, esp the lower jaw in mammals and fishes. 顎(尤指浦乳動(dòng)物和魚的下顎) 。 2 either part of a bird's beak. 鳥嘴的上部或下部。 3 (in insects) either half of the upper pair of jaws, used for biting and seizing. (昆聶之) 上顎之任一半; 大顎 (用于咬攫) 。